| 六角相B-C-N化合物的高压相变研究 |
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| 引用本文： | 杨洁,李明,林鹏,于栋力,何巨龙. 六角相B-C-N化合物的高压相变研究[J]. 高压物理学报, 2011, 25(2): 123-127 |
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| 作者姓名： | 杨洁 李明 林鹏 于栋力 何巨龙 |
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| 作者单位： | 1. 吉林大学超硬材料国家重点实验室，吉林长春 130012；2. 河南理工大学物理化学学院，河南焦作 454000；3. 燕山大学亚稳材料制备技术与科学国家重点实验室，河北秦皇岛 066004；4. 空军航空大学基础部，吉林长春 130012 |
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| 摘 要： | 采用原位高压同步辐射能散X射线衍射和金刚石压砧技术,实验研究了新型超硬材料六角相B0.47C0.23N0.30的高压相变及物理特性,压力范围为1.4～30 GPa.实验结果表明,六角相B..47C0.23N0.30在14.9 GPa压力下发生了相变,形成的新相为六方纤锌矿结构.计算得到了具有六方纤锌矿结构的B0.47C...
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| 关 键 词： | 高压 相变 压缩率 |
| 收稿时间： | 2010-03-22; |
Study on High-Pressure Phase Transition of Hexagonal B-C-N Compound |
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| YANG Jie,LI Ming,LIN Peng,YU Dong-Li,HE Ju-Long. Study on High-Pressure Phase Transition of Hexagonal B-C-N Compound[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 123-127 |
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| Authors: | YANG Jie LI Ming LIN Peng YU Dong-Li HE Ju-Long |
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| Affiliation: | 1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;2. Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China;3. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;4. Fundamental Department, Aviation University of Air Force, Changchun 130012, China |
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| Abstract: | Using in situ high-pressure synchrotron X-ray diffraction and diamond anvil cell (DAC) techniques, the phase transition and physical characteristics of B0.47C0.23N0.30 compound were observed in the pressure range of 1.4~30 GPa. The experimental results showed that the B-C-N compound experiences a phase transition from hexagonal structure to wurtzite phase at 14.9 GPa. The pressure dependences of the lattice parameters and volume of wurtzite-type B-C-N were calculated. By fitting the Brich-Murnaghan equation of state to the pressure-volume data, the bulk modulus of wurtzite-type B-C-N compound was obtained as (275±26)GPa, which is very close to the value of (282±15)GPa for the cubic BC2N. |
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| Keywords: | high pressure phase transition compressibility |
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